389 lines
11 KiB
C++
389 lines
11 KiB
C++
#pragma once
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/* read-only, utf-8 *byte* view */
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using AuROString = std::string_view;
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using AuUTF8StringView = AuROString;
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using AuU8View = AuUTF8StringView;
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// offset in bytes
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using CodepointByteOffset_t = decltype(AuROString::npos);
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// offset in codepoints
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using CodepointOffset_t = AuUInt;
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// AuStringUtils.hpp fwd decl
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static constexpr CodepointByteOffset_t AuCodepointsFindByteOffsetUnsafe(const AuROString &in,
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const AuROString &find,
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CodepointByteOffset_t uStartPosition = {});
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static auline constexpr bool AuEndsWith(AuROString const &value, AuROString const &ending);
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static auline constexpr bool AuStartsWith(AuROString const &value, AuROString const &starting);
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// TODO: implement AuROString (without std::string_view)
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// TODO: implement AuStringView (does not exist yet) (without std::string_view)
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/* read-only, null terminated, utf-8 *byte* view */
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struct AuRONString
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{
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using traits_type = typename AuROString::traits_type;
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using value_type = typename AuROString::value_type;
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using pointer = typename AuROString::pointer;
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using const_pointer = typename AuROString::const_pointer;
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using reference = typename AuROString::reference;
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using const_reference = typename AuROString::const_reference;
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using const_iterator = typename AuROString::const_iterator;
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using iterator = const_iterator;
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using const_reverse_iterator = typename AuROString::const_reverse_iterator;
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using reverse_iterator = const_reverse_iterator;
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using size_type = typename AuROString::size_type;
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using difference_type = typename AuROString::difference_type;
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// using basic_string_view = AuROString;
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using basic_string_view = std::basic_string_view<char>;
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cstatic constexpr size_type npos = size_type(-1);
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inline AuRONString(const AuString &str) :
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view(str)
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{
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}
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inline AuRONString(const std::string &str) :
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view(str)
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{
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}
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inline AuRONString(const char *str) :
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view(str)
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{
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}
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inline constexpr const_iterator begin() const noexcept
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{
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return this->cbegin();
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}
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inline constexpr const_iterator cbegin() const noexcept
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{
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return this->view.cbegin();
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}
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inline constexpr const_iterator end() const noexcept
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{
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return this->cend();
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}
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inline constexpr const_iterator cend() const noexcept
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{
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return this->cbegin() + this->length();
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}
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inline constexpr const_reverse_iterator rbegin() const noexcept
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{
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return this->rbegin();
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}
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inline constexpr const_reverse_iterator crbegin() const noexcept
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{
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return const_reverse_iterator(this->cend());
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}
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inline constexpr const_reverse_iterator rend() const noexcept
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{
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return this->crend();
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}
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inline constexpr const_reverse_iterator crend() const noexcept
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{
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return const_reverse_iterator(this->cbegin());
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}
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inline constexpr int compare(basic_string_view v) const noexcept
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{
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if (size() < v.size())
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{
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return -1;
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}
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int iRet = traits_type::compare(data(), v.data(), v.size());
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if (size() > v.size() &&
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iRet == 0)
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{
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return 1;
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}
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return iRet;
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}
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inline constexpr int compare(size_type pos1, size_type count1,
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basic_string_view v) const
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{
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return this->view.substr(pos1, count1).compare(v);
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}
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inline constexpr int compare(size_type pos1, size_type count1, basic_string_view v,
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size_type pos2, size_type count2) const
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{
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return this->view.substr(pos1, count1).compare(v.substr(pos2, count2));
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}
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inline constexpr int compare(const char *s) const
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{
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return this->compare(basic_string_view(s));
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}
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inline constexpr int compare(size_type pos1, size_type count1,
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const char *s) const
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{
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return this->view.substr(pos1, count1).compare(basic_string_view(s));
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}
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inline constexpr int compare(size_type pos1, size_type count1,
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const char *s, size_type count2) const
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{
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return this->view.substr(pos1, count1).compare(basic_string_view(s, count2));
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}
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inline constexpr bool starts_with(basic_string_view sv) const noexcept
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{
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return AuStartsWith(*this, sv);
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}
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inline constexpr bool starts_with(char ch) const noexcept
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{
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return AuStartsWith(*this, AuROString(&ch, 1));
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}
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inline constexpr bool starts_with(const char *s) const
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{
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return AuStartsWith(*this, s);
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}
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inline constexpr bool ends_with(basic_string_view sv) const noexcept
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{
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return AuEndsWith(*this, sv);
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}
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inline constexpr bool ends_with(char ch) const noexcept
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{
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return AuEndsWith(*this, AuROString(&ch, 1));
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}
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inline constexpr bool ends_with(const char *s) const
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{
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return AuEndsWith(*this, s);
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}
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inline constexpr bool contains(basic_string_view sv) const noexcept
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{
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#if 0
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return AuCodepointsContains(*this, sv);
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#else
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return AuCodepointsFindByteOffsetUnsafe(*this, sv, 0) != AuROString::npos;
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#endif
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}
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inline constexpr bool contains(char c) const noexcept
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{
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return this->contains(basic_string_view(&c, 1));
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}
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inline constexpr bool contains(const char *s) const
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{
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return this->contains(basic_string_view(s));
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}
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inline constexpr const_reference operator[](size_type pos) const
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{
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return *(this->begin() + pos);
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}
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inline constexpr const_reference at(size_type pos) const
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{
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return this->view.at(pos);
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}
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inline constexpr const_reference front() const
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{
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return this->operator[](0);
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}
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inline constexpr const_reference back() const
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{
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return this->operator[](size() - 1);
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}
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inline constexpr const_pointer data() const noexcept
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{
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return &this->operator[](0);
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}
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inline constexpr const_pointer c_str() const noexcept
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{
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return this->data();
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}
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inline constexpr size_type max_size() const noexcept
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{
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return this->view.max_size();
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}
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inline constexpr size_type size() const noexcept
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{
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return this->view.size();
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}
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inline constexpr size_type length() const noexcept
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{
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return this->size();
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}
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inline constexpr bool empty() const noexcept
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{
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return this->size() != 0;
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}
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inline constexpr size_type find(basic_string_view v, size_type pos = 0) const noexcept
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{
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return AuCodepointsFindByteOffsetUnsafe(*this, v, pos);
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}
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inline constexpr size_type find(char ch, size_type pos = 0) const noexcept
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{
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return this->find(basic_string_view(&ch, 1), pos);
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}
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inline constexpr size_type find(const char *s, size_type pos, size_type count) const
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{
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return this->find(basic_string_view(s, count), pos);
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}
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inline constexpr size_type find(const char *s, size_type pos = 0) const
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{
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return this->find(basic_string_view(s), pos);
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}
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inline constexpr size_type rfind(basic_string_view v, size_type pos = npos) const noexcept
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{
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return this->view.rfind(v, pos);
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}
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inline constexpr size_type rfind(char ch, size_type pos = npos) const noexcept
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{
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return this->find(basic_string_view(&ch, 1), pos);
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}
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inline constexpr size_type rfind(const char *s, size_type pos, size_type count) const
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{
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return this->rfind(basic_string_view(s, count), pos);
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}
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inline constexpr size_type rfind(const char *s, size_type pos = npos) const
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{
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return this->rfind(basic_string_view(s), pos);
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}
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inline constexpr size_type find_first_not_of(const basic_string_view right, const size_type offset = 0) const noexcept
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{
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return this->view.find_first_not_of(right, offset);
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}
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inline constexpr size_type find_last_not_of(const basic_string_view right, const size_type offset = npos) const noexcept
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{
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return this->view.find_last_not_of(right, offset);
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}
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inline constexpr size_type find_last_of(const basic_string_view right, const size_type offset = npos) const noexcept
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{
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return this->view.find_last_of(right, offset);
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}
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inline constexpr size_type find_first_of(const basic_string_view right, const size_type offset = 0) const noexcept
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{
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if (right.size() == 0)
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{
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return npos;
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}
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return this->find(right, offset);
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}
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inline constexpr size_type find_first_of(const char c, const size_type offset = 0) const noexcept
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{
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return this->find_first_of(basic_string_view(&c, 1), offset);
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}
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inline constexpr size_type find_first_of(const char *const s, const size_type offset, const size_type count) const
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{
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return this->find_first_of(basic_string_view(s, count), offset);
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}
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inline constexpr size_type find_first_of(const char *const s, const size_type offset = 0) const
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{
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return this->find_first_of(basic_string_view(s), offset);
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}
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inline constexpr size_type find_last_of(const char c, const size_type offset = npos) const noexcept
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{
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return this->find_last_of(basic_string_view(&c, 1), offset);
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}
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inline constexpr size_type find_last_of(const char *const s, const size_type offset, const size_type count) const
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{
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return this->find_last_of(basic_string_view(s, count), offset);
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}
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inline constexpr size_type find_last_of(const char *const s, const size_type offset = npos) const
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{
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return this->find_last_of(basic_string_view(s), offset);
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}
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inline constexpr size_type find_first_not_of(const char c, const size_type offset = 0) const noexcept
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{
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return this->find_first_not_of(basic_string_view(&c, 1), offset);
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}
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inline constexpr size_type find_first_not_of(const char *const s, const size_type offset, const size_type count) const
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{
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return this->find_first_not_of(basic_string_view(s, count), offset);
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}
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inline constexpr size_type find_first_not_of(const char *const s, const size_type offset = 0) const
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{
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return this->find_first_not_of(basic_string_view(s), offset);
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}
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inline constexpr size_type find_last_not_of(const char c, const size_type offset = npos) const noexcept
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{
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return this->find_last_not_of(basic_string_view(&c, 1), offset);
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}
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inline constexpr size_type find_last_not_of(const char *const s, const size_type offset, const size_type count) const
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{
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return this->find_last_not_of(basic_string_view(s, count), offset);
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}
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inline constexpr size_type find_last_not_of(const char *const s, const size_type offset = npos) const
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{
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return this->find_last_not_of(basic_string_view(s), offset);
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}
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inline operator basic_string_view() const
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{
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return this->view;
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}
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private:
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AuROString view;
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};
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inline bool operator==(const AuRONString &lhs,
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const AuRONString &rhs) noexcept
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{
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return AuROString(lhs) == AuROString(rhs);
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} |